frmmain.cs

我在北大青鸟学习cshop的作业（学生管理系统）！希望大家给以指导。

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using Aptech.Student.DataAccess;
using Aptech.Student.Common;

namespace 学生管理系统
{
	/// <summary>
	/// Form1 的摘要说明。
	/// </summary>
	public class frmMain : System.Windows.Forms.Form
	{
		private System.Windows.Forms.Panel panel1;
		private System.Windows.Forms.Panel panel2;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.TreeView tvClass;
		private System.Windows.Forms.ListView lvStudent;
		private System.Windows.Forms.ColumnHeader columnHeader1;
		private System.Windows.Forms.ColumnHeader columnHeader2;
		private System.Windows.Forms.ColumnHeader columnHeader3;
		private System.Windows.Forms.ColumnHeader columnHeader4;
		private System.Windows.Forms.ColumnHeader columnHeader5;
		private System.Windows.Forms.ColumnHeader columnHeader6;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.ListView lvCourse;
		private System.Windows.Forms.DataGrid dgScore;
       
		private System.Windows.Forms.MainMenu mainMenu1;
		private System.Windows.Forms.MenuItem menuItem1;
		private System.Windows.Forms.MenuItem menuItem4;
		private System.Windows.Forms.MenuItem menuItem5;
		private System.Windows.Forms.MenuItem menuItem6;
		private System.Windows.Forms.MenuItem menuItem7;
		private System.Windows.Forms.MenuItem menuItem8;
		private System.Windows.Forms.MenuItem menuItem2;
		private System.Windows.Forms.MenuItem menuItem3;
		private System.Windows.Forms.ImageList imageListMy;
		private System.ComponentModel.IContainer components;

		
		DataSet dsClass;
		DataSet dsStudent;
		public DataSet  dsCourses;
		DataSet dsScores;

		public frmMain()
		{
			//
			// Windows 窗体设计器支持所必需的
			//
			InitializeComponent();

			//
			// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
			//
		}

		/// <summary>
		/// 清理所有正在使用的资源。
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows 窗体设计器生成的代码
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{
			this.components = new System.ComponentModel.Container();
			System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(frmMain));
			this.panel1 = new System.Windows.Forms.Panel();
			this.lvStudent = new System.Windows.Forms.ListView();
			this.columnHeader1 = new System.Windows.Forms.ColumnHeader();
			this.columnHeader2 = new System.Windows.Forms.ColumnHeader();
			this.columnHeader3 = new System.Windows.Forms.ColumnHeader();
			this.columnHeader4 = new System.Windows.Forms.ColumnHeader();
			this.columnHeader5 = new System.Windows.Forms.ColumnHeader();
			this.columnHeader6 = new System.Windows.Forms.ColumnHeader();
			this.imageListMy = new System.Windows.Forms.ImageList(this.components);
			this.tvClass = new System.Windows.Forms.TreeView();
			this.label1 = new System.Windows.Forms.Label();
			this.panel2 = new System.Windows.Forms.Panel();
			this.dgScore = new System.Windows.Forms.DataGrid();
			this.lvCourse = new System.Windows.Forms.ListView();
			this.label2 = new System.Windows.Forms.Label();
			this.mainMenu1 = new System.Windows.Forms.MainMenu();
			this.menuItem1 = new System.Windows.Forms.MenuItem();
			this.menuItem4 = new System.Windows.Forms.MenuItem();
			this.menuItem5 = new System.Windows.Forms.MenuItem();
			this.menuItem6 = new System.Windows.Forms.MenuItem();
			this.menuItem7 = new System.Windows.Forms.MenuItem();
			this.menuItem8 = new System.Windows.Forms.MenuItem();
			this.menuItem2 = new System.Windows.Forms.MenuItem();
			this.menuItem3 = new System.Windows.Forms.MenuItem();
			this.panel1.SuspendLayout();
			this.panel2.SuspendLayout();
			((System.ComponentModel.ISupportInitialize)(this.dgScore)).BeginInit();
			this.SuspendLayout();
			// 
			// panel1
			// 
			this.panel1.Controls.Add(this.lvStudent);
			this.panel1.Controls.Add(this.tvClass);
			this.panel1.Controls.Add(this.label1);
			this.panel1.Dock = System.Windows.Forms.DockStyle.Top;
			this.panel1.Location = new System.Drawing.Point(0, 0);
			this.panel1.Name = "panel1";
			this.panel1.Size = new System.Drawing.Size(624, 152);
			this.panel1.TabIndex = 0;
			// 
			// lvStudent
			// 
			this.lvStudent.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
																						this.columnHeader1,
																						this.columnHeader2,
																						this.columnHeader3,
																						this.columnHeader4,
																						this.columnHeader5,
																						this.columnHeader6});
			this.lvStudent.Dock = System.Windows.Forms.DockStyle.Fill;
			this.lvStudent.GridLines = true;
			this.lvStudent.LargeImageList = this.imageListMy;
			this.lvStudent.Location = new System.Drawing.Point(152, 24);
			this.lvStudent.Name = "lvStudent";
			this.lvStudent.Size = new System.Drawing.Size(472, 128);
			this.lvStudent.SmallImageList = this.imageListMy;
			this.lvStudent.TabIndex = 3;
			this.lvStudent.View = System.Windows.Forms.View.Details;
			this.lvStudent.DoubleClick += new System.EventHandler(this.lvStudent_DoubleClick);
			// 
			// columnHeader1
			// 
			this.columnHeader1.Text = "姓名";
			// 
			// columnHeader2
			// 
			this.columnHeader2.Text = "学号";
			// 
			// columnHeader3
			// 
			this.columnHeader3.Text = "性别";
			// 
			// columnHeader4
			// 
			this.columnHeader4.Text = "出生年月";
			// 
			// columnHeader5
			// 
			this.columnHeader5.Text = "班级";
			// 
			// columnHeader6
			// 
			this.columnHeader6.Text = "备注";
			// 
			// imageListMy
			// 
			this.imageListMy.ImageSize = new System.Drawing.Size(16, 16);
			this.imageListMy.ImageStream = ((System.Windows.Forms.ImageListStreamer)(resources.GetObject("imageListMy.ImageStream")));
			this.imageListMy.TransparentColor = System.Drawing.Color.Transparent;
			// 
			// tvClass
			// 
			this.tvClass.Dock = System.Windows.Forms.DockStyle.Left;
			this.tvClass.ImageList = this.imageListMy;
			this.tvClass.Location = new System.Drawing.Point(0, 24);
			this.tvClass.Name = "tvClass";
			this.tvClass.Size = new System.Drawing.Size(152, 128);
			this.tvClass.TabIndex = 2;
			this.tvClass.DoubleClick += new System.EventHandler(this.tvClass_DoubleClick);
			this.tvClass.AfterSelect += new System.Windows.Forms.TreeViewEventHandler(this.tvClass_AfterSelect);
			// 
			// label1
			// 
			this.label1.BackColor = System.Drawing.SystemColors.ActiveCaption;
			this.label1.Dock = System.Windows.Forms.DockStyle.Top;
			this.label1.Font = new System.Drawing.Font("宋体", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
			this.label1.ForeColor = System.Drawing.SystemColors.ActiveCaptionText;
			this.label1.Location = new System.Drawing.Point(0, 0);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(624, 24);
			this.label1.TabIndex = 1;
			this.label1.Text = "班级列表       学生信息";
			// 
			// panel2
			// 
			this.panel2.Controls.Add(this.dgScore);
			this.panel2.Controls.Add(this.lvCourse);
			this.panel2.Controls.Add(this.label2);
			this.panel2.Dock = System.Windows.Forms.DockStyle.Fill;
			this.panel2.Location = new System.Drawing.Point(0, 152);
			this.panel2.Name = "panel2";
			this.panel2.Size = new System.Drawing.Size(624, 197);
			this.panel2.TabIndex = 1;
			// 
			// dgScore
			// 
			this.dgScore.BorderStyle = System.Windows.Forms.BorderStyle.None;
			this.dgScore.CaptionBackColor = System.Drawing.SystemColors.ActiveBorder;
			this.dgScore.DataMember = "";
			this.dgScore.Dock = System.Windows.Forms.DockStyle.Fill;
			this.dgScore.HeaderForeColor = System.Drawing.SystemColors.ControlText;
			this.dgScore.Location = new System.Drawing.Point(160, 24);
			this.dgScore.Name = "dgScore";
			this.dgScore.Size = new System.Drawing.Size(464, 173);
			this.dgScore.TabIndex = 4;
			// 
			// lvCourse
			// 
			this.lvCourse.Dock = System.Windows.Forms.DockStyle.Left;
			this.lvCourse.LargeImageList = this.imageListMy;
			this.lvCourse.Location = new System.Drawing.Point(0, 24);
			this.lvCourse.Name = "lvCourse";
			this.lvCourse.Size = new System.Drawing.Size(160, 173);
			this.lvCourse.SmallImageList = this.imageListMy;
			this.lvCourse.TabIndex = 3;
			this.lvCourse.DoubleClick += new System.EventHandler(this.lvCourse_DoubleClick);
			// 
			// label2
			// 
			this.label2.BackColor = System.Drawing.SystemColors.ActiveCaption;
			this.label2.Dock = System.Windows.Forms.DockStyle.Top;
			this.label2.Font = new System.Drawing.Font("宋体", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(134)));
			this.label2.Location = new System.Drawing.Point(0, 0);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(624, 24);
			this.label2.TabIndex = 2;
			this.label2.Text = "课程信息         成绩信息";
			//